Rear Window Defogger
Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
Main Menu Table of Contents
Rear Window Defogger
Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
Item to be inspected
(in the engine compartment fuse/relay box]
Blown No. 11 (40A) fuse
(in the integrated control unit)
(in the main fuse box)
Blown No. 5 (10A) fuse
Open circuit in wires, loose or
Blown indicator light bulb
Blown No 4 (15A) fuse
(in the under-dash fuse box)
Defogger timer circuit input
Broken defogger wire
disconnected terminals
Function test
Defogger relay
Poor ground
Symptom
Defogger operates, but indicator
“gm does nm go m YEL/BLK or YEL/WHT
Defogger does not operate and
indicator light does not go on. ⋎⋮∣− ∘↾ YELÍWHT
Defogger does not operate, but
. ∡ ⊳ YEL/WHT, YEL/BLK. BLK/GRN
Indicator light goes on.
Operation time is too long or too
short (Normal operation time is WHT/RED or BLK
25 minutes).
23-272
Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
Main Menu Table of Contents
Rear Window Defogger
Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
Item to be inspected
(in the engine compartment fuse/relay box]
Blown No. 11 (40A) fuse
(in the integrated control unit)
(in the main fuse box)
Blown No. 5 (10A) fuse
Open circuit in wires, loose or
Blown indicator light bulb
Blown No 4 (15A) fuse
(in the under-dash fuse box)
Defogger timer circuit input
Broken defogger wire
disconnected terminals
Function test
Defogger relay
Poor ground
Symptom
Defogger operates, but indicator
“gm does nm go m YEL/BLK or YEL/WHT
Defogger does not operate and
indicator light does not go on. ⋎⋮∣− ∘↾ YELÍWHT
Defogger does not operate, but
. ∡ ⊳ YEL/WHT, YEL/BLK. BLK/GRN
Indicator light goes on.
Operation time is too long or too
short (Normal operation time is WHT/RED or BLK
25 minutes).
23-272